IGCSE Chemistry: Energy Changes and Calorimetry

[@user-qi1xu7if7x]

9 years on and it is still extremely useful for students in 2023!

[@niekapayne4578]

great video but at 6.04, you wrote that 4 x 463 is 1858, it is actually 1852 :)

[@adigaty6724]

You explain stuff much better than my text book xD

[@chrishung7582]

do we have to remeber the bond energy kj/mol energy table for the exam ?

[@ManualShark24]

The butane chemical formula is incorrect, it does not have an oxygen atom.

[@ChemistryKlipz]

Quite right - thanks for spotting this. I wrote butane then wrote the formula for butanol. I'll correct this when I get a chance.

[@engysamad1]

Big thanks

[@ritvikbolugudde8688]

what are moles

[@TheMorhaGroup]

a mole is a specific number and that number is 6.02 times 10 raised to yhe power of 27 (602000000000000000000000000000)

[@ritvikbolugudde8688]

Norbert morha thnx a lot

[@TheMorhaGroup]

Btw it's 23 zeroes not 27 *facepalm* 😢